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Finding the Fourth Proportional to 8,383.19, 11,569.49 and 5,405.22

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Solution

The fourth proportional to 8,383.19, 11,569.49 and 5,405.22 is: 7,459.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,383.19 : 11,569.49 = 5,405.22 : x
  2. Step 2: Convert to fraction form
    8,383.19/11,569.49 = 5,405.22/x
  3. Step 3: Cross multiply
    8,383.19x = 11,569.49 × 5,405.22
  4. Step 4: Simplify right side
    8,383.19x = 62,535,611.71
  5. Step 5: Solve for x
    x = 62,535,611.71/8,383.19
  6. Step 6: Final answer
    x = 7,459.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.